Spotted this WIP release of 1.2.
https://www.wad-archive.com/wad/b2fc22ee9bdaebff188561f3d116ffd8
http://doomshack.org/uploads/sigil_compat_v1_2patch_wip.zip
https://pastebin.com/3KWWVDeQ
The good:
Not so good...
These maps need so badly a chaingun for the single player mode as well. When you run out of shells, having to use the pistol is just boring, slow and impractical. In my opinion, at any rate.